Europium-148 (Eu-148)

Identity

Protons

63

Neutrons

85

Mass number

148

Mass

148 ± 11 u

Mass excess

-76.297 MeV

Spin

5-*

Stability

Half-life: 54.5 days

Natural occurrence

Not found in nature

Decays to

• positron emission 100.0 % → Sm-148
• alpha 9.4e-7 % → Pm-144